Brick-mold sander



1 t e e h S S t e e h S 2 B u d 0 M 0 W BRICK MOLD SANDER.

Patented Dec. 2,1890.

//v I/E/VTOR ATTORNEYS WITNESSES:

(No gl odel.) 2 Sheets-Sheet 2. R. P. ROAOH. BRICK MDLD SANDER.

Patented Dec. 2, 1890.

INVENTO/i':

ATTORNEYS UNITED STATES PATENT Orrien.

ROBERT P. ROACIT, OF ATVOOD, TENNESSEE.

BRICK-MOLD SANDER.

SPECIFICATION forming part of Letters Patent No. 441,978, dated December2, 1890.

Application filed June 28, 1390- Serial No. 357,026. (No model.)

operated, that will thoroughly sand a large number of brick-molds, andthat will use the sand in such a manner that there will be very littlewaste.

To this end my invention consists in certain features of constructionandcombinations of parts, which Will be hereinafter fully described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a broken front elevation of the device embodying myinvention. Fig. 2 is a sectional plan view of the same, taken on theline a: a; in Fig. 1. Fig. 3 is a side elevation of the device. Fig. 4:is a vertical transverse section on the line 3 y of Fig. 1, and Fig 5 isa side elevation taken on the side opposite that shown in Fig.

The frame of the machine consists of the parallel vertical standards A,the connecting cross-pieces A at top and bottom thereof, the

supports A in the upper part of the frame for the upper sand-hopper, thelaterally-extending arms A for supporting the malletrocker shaft, andthe supports A' in the lower part of the machine forsupporting the lowersand-hopper.

Mounted centrally between the standards A on the trunnions is arevoluble box B, having on its four sides the pockets B to permit theinsertion of the brick-molds. The box 13 consists of the square endpieces B", having the square pieces B of smaller size secured thereto onthe inner side, thereby forming the ledges B or the ledges may be formedby cleats secured to the end pieces. Strips B, having their outer edgesflush with the edges of the end pieces and their inner corners notchedinto the pieces B, so that their outer faces are flush with the ledges13*, extend between the ends of the box, and side pieces B are fastenedto the edges of the end pieces, so that their outer edges are flush withthe outer faces of the strips 13, and their inner edges, which are cutaway at the corners, as shown, extend slightly beyond the centers of theedges of the end pieces, thus forming a pocket B on each side of thebox, which pockets are open on their front to re ceive the molds andopen at the bottom into the box B. The box has also an opening 13through one of the sides B and eentrallylocated therein, through whichsand is inserted into the box.

The brick-molds C are of the usual construction, beingdivided bypartitions so as to hold a number of bricks, as shown by dotted lines inFig. 2, and the molds are held in position in the pockets B by theangular catches D,

said catches being pivoted in recesses 19 at the center .of the sides Band having shoulders (Z at one end adapted to engage the edges of themolds and hold the molds in position. The catches D are pivoted at theirelbows, so that they may be easily oscillated. One end of the box B isprovided with a series of projecting pins 1), adapted to operate therockershaft of the mallets, as described hereinafter, and the oppositeend of the box has recesses 19' near each of its four sides adapted toengage a catch, as described below, and prevent the box from turningbackward.

A hopper E is mounted upon the supports A in the upper portion of theframe, said hopper having a depending spout E opening through the bottomand in alignment with the opening B in the sand-box B. A slide-valve cis fitted to slide laterally in the bottom of the hopper E, and by meansof this valve the spout E may be opened and closed at will.

A box F is mounted on the cross-pieces A at the bottom of the frame anddirectly beneath the sand-box B, and a hopper G is mounted on the top ofthe box F, said hopper having flaring sides and ends, as shown, andhaving a suitable screen g extending across the top. It will thus beseen that any Waste sand from the sand-box B will fall upon the screen gand the sand will pass through into the hopper G- and from thence intothe box F,

- against the sand-box.

which may be removed and the sand therein poured into the hopper E atthe top of the machine, so that it may be again used.

In practice the brick-molds O are wet several times during the day, andsoon after being wet too much sand will adhere to them, and at alltimes, whether wet or dry, it is necessary to jar the molds in order toremove the surplus sand. To accomplish this result I use the followingmechanism: A shaft 11 is pivoted between the arms A above the top of thesand-box, from which shaft project forwardly the rods 72, carrying attheir free .ends inallets h, which rest normally upon the top of thesand-box. The shaft II is also provided at one end with an upwardlyprojecting arm 72 which is connected by a spring 72. with apin h on themachine-frame, and the pressure of the springtilts the shaft and causesthe mallet-s to press down upon the top of the box. \Vhen thebrick-molds are first wet, it is necessary to strike them harder thanwhen they are partially dry, and to accomplish this the position of theend of the spring attaehed to the arm 71 may be changed, for whichpurpose the arm is provided with a series of notches 7i to receive thelooped end of the spring which engages the arm. By adj usting the loopin the respective notches the strength of the blow delivered by themallets can be regulated. At the opposite end of the shaft H is an armh, which extends downwardly at one end of the box 13, and 'is'adapted toengage the pins 1) on said box, so that when the box revolves the pinswill successively strike the arm and tilt the shaft 11, thus tilting therods h and causing the mallets h to strike upon the sand-box and givethe necessary jar to the brick-molds.

Projecting from one of the "standards A in front of the machine is astud J, and pivoted thereon isabelhcrank K, one member of which pressesagainst the end of the sand-box, and the other member is provided with aweight K, which normally holds the inner member The bell crank or catchK is pivoted opposite the recesses b in the sand-box, so that when thesand-box revolves the inner meniberof the bell-crank will enter saidrecesses and prevent the sand-box from turning backward.

To operate the machine, sand is placed in the hopper E, ard the valve eis opened so as to let the sand into the sand-box B, the box beingfilled about one-third full. The valve 6 is closed, and the sand-box Bis then revolved, whereby the molds O, which have first been inserted inthe sand-box, will be thoroughly sanded, as the side of the molds closesthe pockets B and the inside of the mold is open to the interior of thebox B. hen the molds O are removed, others are inserted in their places,and a great number of molds may be sanded in a short time. lVhen themolds are removed, the sand which drops from the sand-box'will be caughtupon the screen g, and the screened sand will fall into the box F,sothat the sand ,not adhering to the brick-molds may be again used. Thecatches D may be used as handles to revolve the box, if desired.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a brick-mold sander, a polygonal drum having apocket B parallel with each of its sides and opening inti its interior,one longitudinal side of each pocket being open to permit the. molds tohe slid horizontally thereinto drawer fashion, and retainingcatches forthe molds, substantially as set forth.

2. In a brick-mold sander, a rotary horizontal polygonaldrum B, providedon each of its sides with an offset pocket B opening into the interiorof the drum and each having one and the same longitudinal side open topermit the molds to be slid drawer fashion thereinto, and angulargravity-catches D, pivoted to the free edges of the outer walls of saidpockets and having hooks on one arm to engage the exposed sides of themolds, the other arms of the catches forming handles by which the drummay be rotated, substantially as set forth.

3. The combination, with the sand-hopper having a valved outlet in itsbottom, of a horizontal polygonal drum thereunder and provided on eachof its sides with an offset pocket 13*, opening into the interior of thedrum and each having one longitudinal side open to permit the molds tobe slid drawer fashion thereinto, the outer wall B of one pocket 13having an opening B through which sand may pass from the hopper-ou'tlet,and a series of catches mounted on the walls B to engage the exposedsides of the molds and hold them in the pockets, substantially as setforth.

l. The combination, with the upright frame and the horizontal drummounted therein and having on its outer sides a series of offsetmold-receiving pockets open at one longitudinal side to receive themolds drawer fashion, and projections on one end of the drum, of atransverse rook-shaft parallel with the drum and having arms projectingover the drum and provided with hammers to strike the outer walls B ofthe pockets as they pass thereunder with the molds inverted therein, andan arm projecting from the 'rockshaft into the path of said projections,sub: stantially as set forth.

5. A brick-mold-sander consisting in the vertical fran1e,a sand-hoppermounted in the upper part thereof and provided with a valved outlet inits bottom, a horizontal rotarypolygonal drum B thereunder, and providedwith an offset pocket B on each of its sides, said pockets being open onone and the same longitudinal side to permit the molds to be sliddrawerwise therein, the outer wall B of one pocket having an opening Bto receive sand molds, an arm on the rock-shaft operated by from the hoer eatchesD on said walls B said ro'eetions and ascreened-sand rece ta 77 P J 2 to en a e the molds ro ections on one end cle under the drumsubstantlall as set forth.

a a a J a of said drum, a transverse rook-shaft H, hav- ROBERT P. ROACH.5 ing arms 72, provided with hammers to strike Witnesses:

the said outer walls B of the pockets as they R. Y. CARTER,

are brought thereunder with the inverted R. F. CANNON.

